Asus P4SE User Manual page 49

Graphics Aperture Size [64MB]
This feature allows you to select the size of mapped memory for AGP
graphic data. Configuration options: [4MB] [8MB] [16MB] [32MB] [64MB]
[128MB] [256MB]
AGP Capability [4X Mode]
This motherboard supports the AGP 4X interface that transfers video data
at 1066MB/s. AGP 4X is backward-compatible, so you may keep the
default [4X Mode] even if you are using an AGP 1X video card. When set
to [1X Mode], the AGP interface only provides a peak data throughput of
266MB/s even if you are using an AGP 4x card.
Configuration options: [1X Mode] [2X Mode] [4X Mode]
AGP Fast Write Capability [Disabled]
Configuration options: [Disabled] [Enabled]
Video Memory Cache Mode [UC]
USWC (uncacheable, speculative write combining) is a new cache
technology for the video memory of the processor. It can greatly improve
the display speed by caching the display data. You must set this to UC
(uncacheable) if your display card does not support this feature, otherwise
the system may not boot. Configuration options: [UC] [USWC]
Memory Hole At 15M-16M [Disabled]
This field allows you to reserve an address space for ISA expansion cards.
Setting the address space to a particular setting makes that memory
space unavailable to other system components. Expansion cards can only
access memory up to 16MB. Configuration options: [Disabled] [Enabled]
PCI 2.1 Support [Enabled]
This field allows you to enable or disable the PCI 2.1 features. Keep the
default setting [Enabled] if you installed PCI 2.1 compliant cards. Set to
[Disabled] if you installed any card that is not PCI 2.1 compliant.
Configuration options: [Disabled] [Enabled]
Onboard PCI IDE Enable [Both]
This field allows you to enable either the primary IDE channel or
secondary IDE channel, or both. You can also set both channels to
[Disabled]. Configuration options: [Both] [Primary] [Secondary] [Disabled]
IDE Bus Master Support [Enable]
This field enables or disables the IDE Bus Master Capability under the
DOS environment. Configuration options: [Disabled] [Enabled]
ASUS P4SE Motherboard 2-15